Shoulder and Elbow Research


Dr. Gregory’s lab is focused on clinical and translational research that improves the quality of care for patients with common shoulder and elbow conditions. His research focuses on the utilization of emerging technology and surgical techniques to come up innovative approaches to address common research questions. Emphasis is placed on collaboration with other departments or divisions when possible.

Shoulder and Elbow Research Team 

Research Interests

  • Rotator cuff healing and biomechanics
  • Subacromial bursa derived mesenchymal stem cells
  • Treatment and biomechanics of acromioclavicular joint separation
  • Outpatient shoulder arthroplasty
  • Reverse shoulder arthroplasty biomechanics and in vivo kinematics
  • Predictive shoulder arthroplasty modeling
  • Intra-operative visualization and navigation for shoulder arthroplasty

Current Grant Support

“Subacromial Bursa Reimplantation after Rotator Cuff Repair: A Randomized Controlled Trial”
P.I.: James M. Gregory, M.D.
Industry Support, Arthrex
$107,000 2021-present

“Tornier PERFORM Stemless Reverse IDE Study”
P.I.: James M. Gregory, M.D.
Industry Support, Stryker
$230,000 2022-present

Past Grant Support

“Outcomes of a Novel Proximal Humerus Plate with Expandable Cage”
P.I.: James M. Gregory, M.D.
Industry Support, Conventus
$100,000 2017-2020

Recent Publications

  1. Chalmers PN, Romeo AA, Nicholson GP, Boileau P, Keener JD, Gregory JM, Salazar DH, Tashjian RZ. Humeral Bone Loss in Revision Total Shoulder Arthroplasty: the Proximal Humeral Arthroplasty Revision Osseous inSufficiency (PHAROS) Classification System. Clin Orthop Relat Res. 2019 Feb; 477(2):432-441.
  2. Gregory JM, Wetzig AM, Wayne CD, Bailey L, Warth RJ. Quantification of Patient-Level Costs in Outpatient Shoulder Arthroplasty. J Shoulder Elbow Surg. 2019 Jun;28(6):1066-1073.
  3. Gregory JM, Wayne CD, Miller AJ, Kozemchak AM, Bailey L, Warth RJ. A Geographic Analysis of Total Shoulder Arthroplasty in the State of Texas. J Am Acad of Orthop Surg. 2020 Aug; Publish ahead of Print
  4. Kerl CG, Chassay CM, Gregory JM. Arthroscopic-assisted Fixation of a Nonunited Coronoid Stress Fracture in a Competitive Gymnast. JBJS Case Connect. 2020 July-Sept;10(3).
  5. Pancholi N, Gregory JM. Biologic Augmentation of Arthroscopic Rotator Cuff Repair Using Minced Subacromial Bursa. Arthrosc Tech. 2020 Oct; 9(10):e1519-e1524.
  6. Mease SJ, Kraeutler MJ, Gonzales-Luna DC, Gregory JM, Gardner MJ, Choo AM. Current Controversies in the Treatment of Geriatric Proximal Humerus Fractures. J Bone Joint Surg Am. 2021 Feb 18.
  7. Willenbring TJ, DeVos MJ, Kozemchak AM, Warth RJ, Gregory JM. Is Outpatient Shoulder Arthroplasty Safe in Patients Over 65 Years of Age? A Comparison of Readmissions and Complications in Inpatient and Outpatient Settings. J Shoulder Elbow Surg. 2021 Mar 19.
  8. Gosselin MM, Denney BS, Gregory JM. Treatment of Acromioclavicular Joint Instability With a Tunnel-Free Reconstruction Technique. Arthrosc Tech. 2022 Article in Press